Infectious arthritis, otherwise known as septic arthritis, is caused by bacteria invading a joint. Bacteria may invade the joint through a wound or infection in other parts of the body. The bacteria then grows in the joint, causing pus, pain, redness, and swelling. If it is not treated quickly, it can permanently damage the cartilage in the joint.Causes
Bacterial infection
Skin boils
Cellulitis
Bone infection
Puncture wounds
Skin abrasions
Sexually transmitted diseases
Tuberculosis
Infection elsewhere in the body (such as urinary tract infection)
Risk Factors
Diabetes Mellulitis
Rheumatoid arthritis
Liver disease
Immunosuppressive drugs
Joint surgery
Injections into joints
Poor health
Illness that weakens the immune system (such as HIV)